Genuine OEM Volkswagen hex socket head bolt, part number N91166901. This specialized fastener is used to secure structural or trim components within the vehicle body assembly. Located at position 4 in the fender and chassis mounting diagram, it ensures a rigid connection between parts. The bolt features a precision-machined hexagonal socket head for high torque application without stripping. Choosing genuine OEM hardware ensures the correct tensile strength and corrosion resistance required for long-term structural integrity.